How can Mariela remove completed tasks from view in her shared project tracking sheet?

Mariela can effectively remove completed tasks from view in her shared project tracking sheet by creating and sharing a filter. Using a filter allows her to customize the visibility of the data in the sheet based on specific criteria, such as task status. By setting the filter to exclude completed tasks, Mariela ensures that stakeholders only see the ongoing and relevant tasks, thereby improving clarity and focus on current project activities.

Creating a report, while also useful, is more about aggregating and organizing data from multiple sheets rather than just filtering visibility in a single sheet. Deleting completed tasks would remove them entirely, which might not be desirable if she wants to keep a record for future reference. Changing stakeholders' permissions would not address the visibility issue directly, as it pertains more to access control than to filtering the content displayed in the sheet.